Access-Lists (ACL)
Access-Lists (ACL) Access-list (ACL) is a set of rules defined for controlling network traffic and reducing network attacks. ACLs are used to filter traffic based on the set of rules…
Spanning Tree Protocol (STP)
Spanning Tree Protocol (STP) History OF STP Protocol The history of STP (Spanning Tree Protocol) begins in the early 1980s when computer networks were growing and engineers faced serious problems…
OSPF Routing Protocol
OSPF Routing Protocol OSPF – Open Shortest path firstOSPF stand for Open Shortest path firstStandard protocolIt’s a link state protocolIt uses SPF (shortest path first) or dijkistra algorithmUnlimited hop countMetric is cost…
What is IPsec
What is IPsec What is IP Security (IPSec)IP Security (IPSec) refers to a collection of communication rules or protocols used to establish secure network connections. Internet Protocol (IP) is the…
Cisco Commnd
Cisco Commnds Cisco Commands Cheat Sheet PDF 1Cisco Commands Cheat Sheet PDF 2Cisco Commands Cheat Sheet PDF 3 Static NAT Dynamic NAT Dynamic PAT DST NAT Static NAT .......... Configure…
What is Cisco CDP LLDP
CDP & LLDP CDP LLDP CDP (Cisco Discovery Protocol) and LLDP (Link Layer Discovery Protocol) are both network protocols used for discovering devices on a local network. CDP is Cisco-specific, providing information about…
What is Inter-VLAN Routing & SVI
Inter-VLAN Routing Inter-VLAN Routing Understanding VLANsBefore diving into inter-VLAN routing, it’s crucial to understand VLANs and their role in networking. What Are VLANs?A VLAN (Virtual Local Area Network) is a logical…
Industry Real life Network Engineer Skills
Industry Real life Network Engineer Skills Industry Real life Network Engineer Skills 1. Basic IT and Networking FoundationThe first step to becoming a Network Engineer is learning the basic concepts…
What is NAT How Works
NAT & PAT Technology What is NAT The problem with IPv4 addressesAn IP address is used as an endpoint identifier in IP-based communications. It is just like a telephone number.…
Connect Cisco Router & Switch to Internet
Connect Cisco Router & Switch to Internet Router Interface Configuration ............................... show ip interface breif config t interface fa0/0 ip address dhcp no shutdown exit Default Routing Configuration ............................. config…